E-MU Systems E4K
keyboard
Has sold for €620 over 2018–2025, across 11 used sales. Too few in the last two years for a typical price today.
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Not enough sold data for a typical price.
For sale right now
The best-priced as cards, a row of them; every other ad as a line, by ask. Each ask is the seller’s own number; the platform’s mark opens the listing. Each one says when we last confirmed it at its source: the price and availability are from that visit, so check the marketplace before you go.
Nothing live right now on the platforms we track.
Price history
Every recorded sale, one point each: 12 of them, placed by the day the ad went up. Too few sales to draw a trend through them without inventing one, so the points speak for themselves. Condition is mixed, so some of the spread is a mint against a fair rather than the market moving.
Recent sales by listing date
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 23 Sept 2025 | €261$293 as sold | poor |   Belgium | Reverb | Details |
| 6 Aug 2025 | €623$699 as sold | very good |  United States | Reverb | Details |
| 27 Jul 2022 | €338$380 as sold | good | — | Reverb | Details |
| 29 Apr 2022 | €314$353 as sold | poor |  Romania | Reverb | Details |
| 6 Feb 2021 | €690$775 as sold | very good | United States | Reverb | Details |
A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in October 2026. A price is what the listing last asked, converted at that day’s rate.
Show all 12 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 1 Jan 2021 | €423$475 as sold | very good | United States | Reverb | Details |
| 4 Oct 2020 | €619$695 as sold | excellent | United States | Reverb | Details |
| 18 Nov 2019 | €801$899 as sold | mint | United States | Reverb | Details |
| 14 Nov 2019 | €1,052$1,177 as sold | very good |  United Kingdom | Reverb | Details |
| 6 May 2019 | €668$750 as sold | very good | United States | Reverb | Details |
| 30 Apr 2018 | €1,068$1,199 as sold | very good | United States | Reverb | Details |
| 8 Mar 2017 | €133$150 as sold | parts | United States | Reverb | Details |
A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in October 2026. A price is what the listing last asked, converted at that day’s rate.
11 recorded sales of the E-MU Systems E4K from 2018–2025, all-time around €620. Too few in the last two years to quote a typical used price. Figures computed 18 October 2026.